Smoker&#39;s pipe



D 1955 J. P. PARKINSON SMOKER S PIPE Filed June 19, 1953 s R v, WW m M X4 w p M f. M 0 d w y United States Patent O SMOKERS PIPE John P.Parkinson, Detroit, Mich. Application June 19, 1953, Serial No. 362,7541 Claim. (Cl. 131-195 This invention relates to smokers pipes, and moreparticularly, has reference to a bowl formation for a smokers pipewherein the recess of the bowl is bounded by a plurality of slots, saidslots being disposed nearly tangentially of the recess and opening attheir ends upon the outer surface of the bowl.

Among important objects of the invention are to provide a pipe whichwill be cool to the touch; will be light in weight; will be capable ofmanufacture in any of various shapes or sizes without losing theadvantages of the invention; will be easy to manufacture; and adaptedfor conversion from a conventional pipe.

Other objects will appear from the following description, the claimappended thereto, and from the annexed drawing, in which like referencecharacters designate like parts throughout the several views, andwherein:

Figure 1 is a top plan view;

Figure 2 is a side elevational view;

Figure 3 is a transverse sectional view through the bowl on line 3-3 ofFigure 2; and

Figure 4 is a longitudinal section through the bowl on line 44 of Figure2.

In accordance with the present invention, the bowl of the smokers pipehas a center recess 12 which can be lined as at 14. The bowl can be madeof briar or any other conventional materials, and can have a wallthickness no greater than that of a conventional pipe not having theinventive structure to be described hereinafter. Further, the recess isof conventional depth and width. All these factors are believed to be ofimportance, since it is a worthwhile characteristic of the inventionthat the structure thereof permits the cooling means to be embodied inpreviously manufactured, conventional pipes, through a simple conversionprocess.

In accordance with the present invention, a pair of diametricallyopposite slots 16 are formed in the bowl wall, at opposite sides of therecess 12, said slots extending longitudinally of the pipe. Further, inaccordance with the invention, a pair of diametrically oppositetransverse slots 18 are formed in the bowl wall, the slots 18 extendingtransversely of the pipe, and intersecting at their ends with the endsof the slots 16, the several slots opening upon the outer surface of thebowl wall through slot-like apertures 20, the slot-like apertures beingdisposed at the points of intersection.

At will be noted, the slots 16 and 18 lie in planes nearly tangential tothe recess 12, the mid-length portions of the slots being very close tothe recess, and being separated from the interior of the recess by avery thin wall portion. As a result, heat transfer through the very thinwall portion is facilitated, the heat being transferred into themid-length portions of the slots, and being then drawn out of the slotsthrough the medium of air circulating freely through the slots from theends thereof.

The pipe illustrated has a conventional stem 22 and mouth piece 24,these parts being of ordinary design and not constituting, per se, partsof the present invention.

The particular construction illustrated and described of the recess ofthe bowl (Figure 4).

provides a bowl which will be cool to the touch, so as to prevent onefrom burning his fingers when grasping the bowl. Further, a cooler smokewill be another desirable result of the construction, due to the fact.that the transfer of heat from the interior of the bowl is acceleratedmeasurably, due to the nearly tangential arrangement of the slots, andthe opening of the slots at their ends upon the outer surface of thebowl.

It is also important to note that the top and bottom portions 25 and 27,respectively, of the slots, between the open ends thereof, terminateclose to the top and bottom ends respectively of the recess (see Figure4), so as to leave the bowl wall unslotted at the opposite ends of therecess. Y

With further reference to the particular formation and relativearrangement of the slots, as will be noted in Figure 3 the slots 16 liein planes paralleling the longitudinal center line of the stem, whilethe slots 18 lie in planes normal to the planes of slots'16. Further,the planes of the slots 16, 18 are disposed in parallelism with the axisStill further, the outer side walls Thus, the slots particulararrangement of the inner and of the respective slots is of importance.16 have outer side-walls 26 closely spaced from and paralleling theinner side walls 28 of said slots 16, while the slots 18 have outer sidewalls 30 similarly arranged relative to the inner side walls 32 of theslots 18. The inner side walls 28 intersect with the inner side walls 32at points occurring substantially at the outer circumference of thebowl, while the outer side walls 26 of slots 16 have their endsterminating upon said outer bowl circumference at points spacedcircumferentially of the bowl from the ends of the outer side walls 30of the slots 18. This arrangement, as will be apparent from Figure 3,causes the several slots to define a narrow, continuous rectangularpassage extending about the full circumference of the recess of thebowl, with said passage extending over the greatest part of the lengthof the recess as shown in Figure 4, that is, the top and bottom portionsof the passage are close to the outer and inner ends, respectively, ofthe recess. The passage, as shown in Figure 3, is formed with corneropenings due to the particular formation and relative arrangement of theslots previously described herein, said corner openings being theslot-like apertures 20. Each aperture is of a width, due to thementioned arrangement of the inner and outer side walls of the slotsrelatives to the outer circumference of the bowl, substantially equal tothe combined widths of the intersecting slots that form said apertures.The apertures, further, are angularly spaced ninety degrees apart aboutthe bowl circumference, and because of the specified arrangement of theseveral slots relative to the longitudinal center line of the stem, whenthe bowl is gripped in a natural manner between the thumb and forefingerat opposite sides of the bowl, the finger and thumb will not cover anyof the apertures, and further, will be in contact with the bowl wherethere are substantially thick wall portions, to provide maximum coolnessto the touch.

A decidedly important characteristic of the invention resides in theadaptability thereof to previously manufactured pipes not having theslotted wall formation in the bowls thereof. In other words, a whollyconventional pipe can be converted, through the medium of ordinary toolssuch as slotting drills, or conventional drills and saws. It is merelynecessary that each slot be formed in turn, and on completion of theformation of the several slots, said slots will all open at their endsupon the outer surface of the bowl wall, at the points upon the bowlwall outer surface where the tools were entered.

It is believed apparent that the invention is not necessarily confinedto the specific use or uses thereof described above, since it may beutilized for any purpose to which it may he-suited. Noris the inventionto be necessar ly limi d to the specifi c nst u t i r e n described,since such construction is only intended to be illustrative of theprinciples (of operation and the means presently devised to carry out,said principles, it being considered that the invention comprehends anyminor change in construct-ion that may be permitted within the scope ofthe appendedclaim.

What is'claimed is:

In a smokers pipe having a stem, a bowl of circular cross sectionon oneend of the stern and having a central tobacco-receiving recess also ofcircular cross section, the bowl being formed with a first pair ofdiametrically opposite, narrow slots lying in planes extendinglongitudinally-of the pipe .in parallelism with the longitudinal centerline :of the stern and with a second pair of diametrically opposite,narrow slots lying in planes extending normally to the planes of thefirst slots, the several planes of the slots being nearly tangential tosaid recess in parallelism ,with the axis of the recess, the top andbottom portions of the slots being spaced inwardly from the top andbottom ends, respectively, of the bowl to leave the bowl wall unslottedat the outer and innerends of the recess and being closely spaced fromsaid outer and inner ends, respectively, of the recess, the slots ofeach pair intersecting at their ends with the ends of the other pair andopening at the points of intersection upon the outer surface of the bowlfor free circulation of cooling air therebetween, the several slotsdefining a narrow rectangular passage extending continuously about therecess over the greatest part of the length of the recess and opening atits corners upon the outer surface of the bowl, the slots of each pairhaving inner side walls intersecting with the inner side walls of theslots of the other pair at points occurring substantially at the outercircumference of the bowl, and having outer side walls the ends of whichterminate upon said outer circumference at points spacedcircumferentially of the References Cited in the file of this patentUNITED STATES PATENTS 986,024 Odenbaugh et al Mar. 7, 1911 2,251,545Munzer Aug. 5, 1941 2,481,971 Beeneck Sept. 13, 1949 2,651,307 FergusonSept. 8, 1953 FOREIGN PATENTS 561,722. France Aug. 16, 1923

